US20040159002A1 - Hair dryer with infrared source - Google Patents
Hair dryer with infrared source Download PDFInfo
- Publication number
- US20040159002A1 US20040159002A1 US10/757,374 US75737404A US2004159002A1 US 20040159002 A1 US20040159002 A1 US 20040159002A1 US 75737404 A US75737404 A US 75737404A US 2004159002 A1 US2004159002 A1 US 2004159002A1
- Authority
- US
- United States
- Prior art keywords
- heating source
- hairdryer
- heater
- hair styling
- primary
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000010438 heat treatment Methods 0.000 claims abstract description 32
- 239000000919 ceramic Substances 0.000 claims description 7
- 239000012530 fluid Substances 0.000 abstract description 14
- 239000003570 air Substances 0.000 description 26
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
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- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- -1 tungsten Chemical class 0.000 description 1
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- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D20/00—Hair drying devices; Accessories therefor
- A45D20/04—Hot-air producers
- A45D20/08—Hot-air producers heated electrically
- A45D20/10—Hand-held drying devices, e.g. air douches
- A45D20/12—Details thereof or accessories therefor, e.g. nozzles, stands
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D20/00—Hair drying devices; Accessories therefor
- A45D20/22—Helmets with hot air supply or ventilating means, e.g. electrically heated air current
- A45D20/38—Arrangement of the electric heating means
- A45D20/40—Arrangement of the electric heating means for use of infrared rays
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D2200/00—Details not otherwise provided for in A45D
- A45D2200/20—Additional enhancing means
- A45D2200/205—Radiation, e.g. UV, infrared
Abstract
A hairdryer having a body with a handle portion and a head portion is provided. The handle portion has an ergonomically shape and a control interface. The head portion has an inlet end defining an air inlet and an outlet end defining an air outlet. The head portion also has a blower for drawing air into the inlet, to direct the fluid air through the head portion, and force the fluid air out the outlet. The head portion also has one or more primary heaters for heating the fluid air as it passes through the head portion and one or more secondary heaters for selectively providing radiant energy to the fluid air as it exits the head portion.
Description
- 1. Field of the Invention
- The present invention relates to hairdryers. More particularly, the present invention relates to a hand-held, electric hairdryer with an infrared source.
- 2. Description of the Related Art
- It is well known in the art to provide hairdryers with one or more primary heaters for heating air as it is pumped through a body structure for influencing the direction of the fluid air. These conventional hairdryers often employ fan-forced convection heating systems intended to heat air and then hair by convection. These heating systems require large surface areas to effectively transfer heat to the fluid air. The temperatures associated with these conventional heating systems are generally kept low enough to avoid coil glow, which generally indicates poor heat transfer in localized areas and which can result in premature coil failure. A typical hairdryer has sufficient energy transferred with the readily available surface area to keep wire temperatures at black heats, approximately 800 degrees C., and to still heat the air column to about 100 degrees C., the maximum temperature allowed by Underwriters Laboratories Inc. and similar regulating agencies.
- Other known hairdryers have featured protected wire structures or sources such as quartz tube heaters or halogen incandescent lamps, which employ higher temperature metals, such as tungsten, and vacuum or halogen gases to limit oxidation and breakdown of the heater wires at the higher temperatures. With these systems, the heat sources are often hot enough, approximately 1000 degrees C. and higher, to emit visible light. The heater surface areas are relatively small, as the resistance wires are protected from exposure to air and the hotter wire is a more efficient radiator of energy. Energy available for heating and drying wet hair is transferred primarily as radiant heat, rather than by convection from heated air.
- It is significant that infrared hairdryer systems have a component of convective energy transfer to their energy output and wire coil or convection heaters have a radiant component to their energy spectrum. Some known hairdryers have been provided with structures designed specifically to increase either one or the other convective or radiant components in the energy profile. For example, infrared dryers may have a fan mounted behind their heat lamps and wire-coil hairdryers may have relatively large masses of ceramic or metal masses nearby the coils in order to absorb heat from the resistance metal coils and then to reradiate that energy in wavelengths that more efficiently heat water. All these known systems, however, have relatively fixed profiles of energy emission. Overall power levels may be variable, but the proportions of convective to radiant energy transfer remains fixed by the design of the system.
- It is an object of the present invention to provide an improved hairdryer.
- It is another object of the present invention to provide an improved hairdryer that more efficiently dries hair.
- It is yet another object of the present invention to provide an improved hairdryer with both a primary and secondary heating source that may operate separately or individually and/or together or simultaneously.
- It is still another object of the present invention to provide an improved hairdryer that allows an operator to selectively apply radiant energy and/or heated fluid air to one or more strands of hair as desired via a control interface.
- It is yet still another object of the present invention to provide an improved hairdryer that safely allows, via self regulation, radiant energy to be selectively switched on and/or off and thereby added and/or removed from a fluid air.
- It is a further object of the present invention to provide an improved hairdryer that allows a radiant energy component to be selectively provided to a fluid air generated by a convective heating system.
- It is still a further object of the present invention to provide an improved hairdryer with one or more infrared sources positioned along a centerline of a fluid air stream.
- It is yet a further object of the present invention to provide an improved hairdryer having one or more variable and/or adjustable infrared sources.
- These and other objects and advantages of the present invention are achieved by an improved hairdryer in accordance with the present invention having a body with a handle portion and a head portion. The handle portion is preferably ergonomically shaped and preferably has a control interface. The head portion has an inlet end defining an air inlet and an outlet end defining an air outlet. The head portion also has a blower for drawing air into the inlet, direct the fluid air through the head portion, and force the fluid air out the outlet. Furthermore, the head portion also has one or more primary heaters for heating the fluid air as it passes through the head portion and one or more secondary heaters for selectively providing radiant energy to the fluid air as it exits the head portion.
- Other and further objects, advantages and features of the present invention will be understood by reference to the following specification in conjunction with the accompanying drawings, in which like reference characters denote like elements of structure.
- FIG. 1 is a side, partial section, view of a hairdryer in accordance with an illustrative embodiment of the present invention;
- FIG. 2 is a side sectional view of a radiant energy source or secondary heating source in accordance with an illustrative embodiment of the present invention;
- FIG. 3 is an exploded section view of the radiant energy source or secondary heating source of FIG. 2;
- FIG. 4 is an exploded perspective view of the radiant energy source or secondary heating source of FIG. 2 in accordance with an illustrative embodiment of the present invention; and
- FIG. 5 is an exploded perspective view of the radiant energy source or secondary heating source of FIG. 2 in accordance with another illustrative embodiment of the present invention.
- Referring to the drawings and in particular to FIG. 1, there is shown a hairdryer in accordance with a preferred embodiment of the present invention generally represented by
reference numeral 1. Thehairdryer 1 has abody 10 with at least two portions, ahandle portion 20 and ahead portion 30. Thehandle portion 20 is preferably ergonomically shaped for comfortable handling and may preferably have acontrol interface 22. Thehead portion 30 preferably has at least afirst end 32 with anair ingress 33 and asecond end 34 with anair egress 35. Thehead portion 30 is preferably suitable to accommodate ablower 36 for generating an airflow. Thehead portion 30 may preferably also accommodate one or more primary heating sources orprimary heaters 40 for providing heat to the airflow and one or more secondary heating sources orsecondary heaters 50 for selectively providing radiant energy to the airflow as desired. - As shown,
blower 36 is preferably positioned betweenair ingress 33 and at least oneprimary heater 40 so thatblower 36 may preferably operate to draw ambient air intohead portion 30 thereby generating an airflow that may be initially heated as it passes at least oneprimary heater 40. Also as shown, at least onesecondary heater 50 is preferably positioned between at least oneprimary heater 40 andair egress 35 so that the airflow may selectively be provided with radiant energy as desired before, after, and/or as the airflowexits head portion 30 viaair egress 35. Further, in one aspect of the present invention, either or bothair ingress 33 andair egress 35 may be provided with agrill structure head portion 30. -
Blower 36, one or moreprimary heaters 40, and/or one or moresecondary heaters 50 are each preferably operatively connected tocontrol interface 22, which may have any of a variety of controls for allowing the operator to select a variety of airflow and/or temperature settings. For example,control interface 22 may have, among other controls, ablower control 24, aprimary heater control 26, and asecondary heater control 28. Preferably,blower control 24 allows the operator to selectively activate/deactivateblower 36 and/or otherwise control the intensity of theairflow exiting egress 35. Theprimary heater control 26 preferably allows the operator to selectively activate/deactivate one or moreprimary heaters 40 and/or otherwise control the heat or temperature provided thereby. Likewise,secondary heater control 28 preferably allows the operator to selectively activate/deactivate one or moresecondary heaters 50 and/or otherwise operatively control the radiated energy provided thereby. It is noted thatcontrols hairdryer 1, but rather any one or more controls may operate to control any two of more operating functions associated withhairdryer 1. -
Blower 36, one or moreprimary heaters 40, and/or one or moresecondary heaters 50 are also preferably operatively connected to a power source (not shown) via apower cord 29. The geometry, components, circuitry and connecting wires associated withblower 36, one or moreprimary heaters 40, and/or one or moresecondary heaters 50, and any other component ofhairdryer 1, as appropriate, may preferably be similar to that which is known in the art. For example, in one aspect of the present invention,blower 36 may be a fan and motor assembly (not shown) with the fan configured so that when driven by the motor, via a rotary shaft, air is drawn intohead portion 30. Also, as best shown in FIG. 1,primary heaters 40 may be a conventional convention heater with one ormore coil heaters 42 wound on one or morecrossed mica cards 44 mounted inhead portion 30 ofhairdryer 1. - Referring now to FIGS. 2 and 3, in a preferred embodiment of the present invention one or more
secondary heaters 50 may preferably be of an infrared (IR) nature and may preferably utilize aheater element 52, such as, for example, a PTC ceramic heater preferably having a doped ceramic with the property of variable electrical resistance depending on the ceramic temperature.Heater element 52 preferably has a positive temperature coefficient so that resistance increases with increased temperature.Heater element 52 preferably stabilizes around an average power input and/or temperature and may, therefore, be self-regulating. In addition, in one aspect of the present invention,heater element 52 preferably does not require additional temperature monitoring or control. It is noted, however, that this need not be the case. It may be possible in alternative embodiments of the present invention to use various other resistance-type heaters in combination with an electronic temperature monitor, such as a thermistor bead, for example. Further, any of a variety of different electronic control circuits that offer additional features/benefits (e.g., variable and/or adjustable airflows, temperatures, and/or radiation components) may be used to accomplish the preferred power and/or temperature regulation or monitoring associated with the various embodiments of the present invention. - As shown, in a preferred aspect of the present invention,
heater element 52 of one or moresecondary heaters 50 may preferably be positioned proximate to one or more, and preferably at least two,electrodes 54 so thatheater element 52 andelectrodes 54 are preferably at least substantially in conductive contact. Preferably, eachelectrode 54 has one or morelead wires 56 that are preferably either directly or indirectly electrically connected to the power source and/or one ormore controls control interface 22. - In turn,
heater element 52 andelectrodes 54 may preferably be positioned in an insulator or insulatingmember 58 in a tight or secure manner so that insulatingmember 58 at least substantially surrounds the heater/electrode assembly. It is noted that insulatingmember 58 may be formed of any suitable material known in the art. Insulatingmember 58 may then preferably be positioned in aconductive tube 60 having at least suitable thermally conductive and/or radiant properties, such as, for example those properties provided by aluminum or the like. In a preferred aspect of the present invention,conductive tube 60 securely accommodates or tightly holds the heater/electrode/insulator assembly. -
Conductive tube 60 preferably has two ends that may preferably be covered, closed and/or sealed. Each end is preferably sealed by preferably two conductive end caps, afirst end cap 62 and asecond end cap 64, each of which may also have at least thermally conductive and/or radiant properties. End caps 62, 64 may have any of a variety of shapes, sizes and/or configurations. For example, as reflected byfirst end cap 62, one or both end caps may be sized and shaped to fit overconductive tube 60 in a secure or tight manner. Alternatively, as reflected bysecond end cap 64, one or both end caps may be sized and shaped so as to fit inconductive tube 60 in a secure or tight manner. Thus, in this preferred aspect of the present invention, end caps 62, 64 preferably provide additional radiating and/or conductive surface area to that already provided by the outer surface ofconductive tube 60. - In another aspect of the present invention, one or more
secondary heaters 50 may preferably be operatively associated with one ormore radiators 66. For example, as shown in FIG. 2, at least oneradiator 66 may be press fit ontoconductive tube 60 in at least a substantially secure or tight manner. Alternatively, theconductive tube 60 may be integrally formed as part of theradiator 66. Eachradiator 66 may preferably be made of any of a variety of materials having thermally conductive and/or radiant properties, such as, for example, aluminum, ceramic and/or stainless steel. - As best shown in FIGS. 4 and 5, the one or
more radiators 66 may preferably have one ormore fins 68 preferably radially arranged for optimal thermal radiation.Fins 68 are preferably also fashioned from materials with appropriate thermal radiant and conductive properties.Fins 68 may have any of a variety of shapes, sizes and/or configurations as appropriate for incorporation into a particular hair styling appliance. - Having identified and discussed some of the preferred features of the present invention the present invention, in use, preferably allows the operator to selectively provide radiant energy via a switchable infrared source to one or more strands of hair either separately or simultaneously with a heated airflow as desired. This may be accomplished, for example, by positioning the one or more
secondary heaters 50 of the present invention ategress 35 ofhead portion 30, and more preferably about or along acenterline 70 thereof. For example, as reflected by FIG. 4, thegrill structure 38 ofegress 35 may preferably securely retain one or moresecondary heaters 50 about or alongcenterline 70. Additionally, in various alternative embodiments of the present invention, one or moresecondary heaters 50 may be positioned inhead portion 30 at any point about or alongcenterline 70 betweenprimary heaters 40 andegress 35. - The present invention having been thus described with particular reference to the preferred forms thereof, it will be obvious that various changes and modifications may be made therein without departing from the spirit and scope of the present invention as defined herein. For example, as shown in FIG. 5, which is an alternative embodiment of the present invention, heater element52 (e.g., a PTC heater or the like) may preferably be directly mounted to
radiator 66 via atubular opening 67, for example, in order to be centrally positioned with respect to the radiator. - It is believed that the many advantages of this invention and the manner in which it fulfills the stated objectives will be understood by those skilled in the art.
Claims (20)
1. A hairdryer comprising:
a body having a handle portion and a head portion, said head portion having a blower for generating airflow, a primary heater for providing heat to said airflow, and a secondary heater for selectively providing radiant energy to said airflow as desired.
2. The hairdryer of claim 1 , wherein said handle portion has a control interface.
3. The hairdryer of claim 2 , wherein said control interface enables an operator to at least activate and/or deactivate said secondary heater.
4. The hairdryer of claim 1 , wherein said primary heater is a convection heater.
5. The hairdryer of claim 1 , wherein said secondary heater is an infrared heater.
6. The hairdryer of claim 1 , wherein said secondary heater is a PTC ceramic heater.
7. The hairdryer of claim 1 , wherein said primary and said secondary heaters may be operated individually and/or together as desired.
8. The hairdryer of claim 1 , wherein said secondary heater is self-regulating.
9. The hairdryer of claim 1 , wherein said head portion has a first end with an air ingress and a second end with an air egress with said secondary heater centrally disposed at said second end.
10. A hair styling appliance comprising:
a body having at least two portions, a first portion and a second portion, said first portion accommodating at least a primary heating source and a secondary heating source, said second portion accommodating a control interface for allowing an operator to control said primary heating source and/or said secondary heating source, or the heating effect provided by said primary heating source and/or said secondary heating source, individually and/or together as desired.
11. The hair styling appliance of claim 10 , wherein said primary heating source is one or more convection heaters.
12. The hair styling appliance of claim 10 , wherein said secondary heating source is one or more infrared heaters.
13. The hair styling appliance of claim 10 , wherein said secondary heating source is one or more PTC ceramic heaters.
14. The hair styling appliance of claim 10 , wherein said secondary heating source is self-regulating.
15. The hair styling appliance of claim 10 , wherein said first portion has a first end with an air ingress and a second end with an air egress, and wherein said secondary heating source is centrally positioned at said second end.
16. The hair styling appliance of claim 15 , wherein said first portion has a blower for generating an airflow.
17. The hair styling appliance of claim 16 , wherein said primary heating source initially heats said airflow, and wherein said secondary heating source selectively provides radiant energy thereto.
18. The hair styling appliance of claim 16 , wherein said blower, or the effect provided thereby to said airflow, is controlled via said control interface.
19. The hair styling appliance of claim 16 , wherein said blower is adjustable to provide a variety of different airflow effects.
20. The hair styling appliance of claim 10 , wherein said primary heating source and said secondary heating source are each separately adjustable to provide a variety of different heating effects.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/757,374 US20040159002A1 (en) | 2003-01-16 | 2004-01-14 | Hair dryer with infrared source |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US44006103P | 2003-01-16 | 2003-01-16 | |
US10/757,374 US20040159002A1 (en) | 2003-01-16 | 2004-01-14 | Hair dryer with infrared source |
Publications (1)
Publication Number | Publication Date |
---|---|
US20040159002A1 true US20040159002A1 (en) | 2004-08-19 |
Family
ID=32771777
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/757,374 Abandoned US20040159002A1 (en) | 2003-01-16 | 2004-01-14 | Hair dryer with infrared source |
Country Status (5)
Country | Link |
---|---|
US (1) | US20040159002A1 (en) |
EP (1) | EP1592318A4 (en) |
CN (1) | CN1761414A (en) |
CA (1) | CA2513602A1 (en) |
WO (1) | WO2004064565A2 (en) |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080040943A1 (en) * | 2003-07-24 | 2008-02-21 | Klaus Worgull | Hand Hair Dryer With Two Handle Grips |
US20100078038A1 (en) * | 2008-08-23 | 2010-04-01 | Shami Farouk M | Hair Iron |
US20120060858A1 (en) * | 2009-04-24 | 2012-03-15 | Elc Management Llc | Infrared Emitting Hair Roller And Methods Of Use |
US20130087723A1 (en) * | 2010-06-16 | 2013-04-11 | Halliburton Energy Services, Inc. | Downhole sources having enhanced ir emission |
US8424543B2 (en) | 2010-06-30 | 2013-04-23 | Elc Management Llc | Red light emitting device for use with hair product and blow dryer |
US8885163B2 (en) | 2009-12-23 | 2014-11-11 | Halliburton Energy Services, Inc. | Interferometry-based downhole analysis tool |
US9091151B2 (en) | 2009-11-19 | 2015-07-28 | Halliburton Energy Services, Inc. | Downhole optical radiometry tool |
US20170196730A1 (en) * | 2016-01-07 | 2017-07-13 | Amaxy, Inc. | Far-infrared (FIR) light heated ceramic electric blower for physiotherapeutic or other therapeutic uses |
WO2018023119A1 (en) * | 2016-07-29 | 2018-02-01 | Spur Concepts Inc | Systems and methods for delivering heat in a battery powered blow dryer |
WO2017223418A3 (en) * | 2016-06-24 | 2018-03-22 | Hatco Corporation | Food product temperature regulation unit |
US10684073B2 (en) | 2017-06-08 | 2020-06-16 | Jade Charm Industrial Limited | Infrared light source drying apparatus and drying method |
US10791590B2 (en) | 2016-02-01 | 2020-09-29 | Hatco Corporation | Food product temperature regulation |
US11076671B2 (en) * | 2014-12-02 | 2021-08-03 | RevAir, LLC | Vacuum assisted systems and methods for grooming hair |
US20220022621A1 (en) * | 2016-07-29 | 2022-01-27 | Spur Concepts Inc. | Modulation techniques for prolonging battery life in a battery-powered hair dryer |
USD953634S1 (en) | 2020-12-28 | 2022-05-31 | Conair Llc | Hair dryer |
US11464313B2 (en) * | 2020-05-09 | 2022-10-11 | Sz Zuvi Technology Co., Ltd. | Apparatuses and methods for drying an object |
USD985841S1 (en) | 2021-03-19 | 2023-05-09 | Conair Corporation | Curling iron |
US11672318B2 (en) | 2020-05-09 | 2023-06-13 | Sz Zuvi Technology Co., Ltd. | Apparatuses and methods for safely drying an object |
US11832698B2 (en) | 2020-05-09 | 2023-12-05 | Sz Zuvi Technology Co., Ltd. | Apparatuses and methods for drying an object |
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Publication number | Priority date | Publication date | Assignee | Title |
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GB2543536B (en) | 2015-10-21 | 2019-01-02 | Dyson Technology Ltd | A handheld appliance |
GB2543537B (en) | 2015-10-21 | 2018-09-19 | Dyson Technology Ltd | A handheld appliance |
GB2543538B (en) | 2015-10-21 | 2018-05-09 | Dyson Technology Ltd | A haircare appliance |
GB2545225B (en) * | 2015-12-09 | 2018-05-02 | Dyson Technology Ltd | A handheld appliance |
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2004
- 2004-01-14 CN CN200480007224.XA patent/CN1761414A/en active Pending
- 2004-01-14 EP EP04702166A patent/EP1592318A4/en not_active Withdrawn
- 2004-01-14 CA CA002513602A patent/CA2513602A1/en not_active Abandoned
- 2004-01-14 US US10/757,374 patent/US20040159002A1/en not_active Abandoned
- 2004-01-14 WO PCT/US2004/000852 patent/WO2004064565A2/en active Search and Examination
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US4450496A (en) * | 1979-08-16 | 1984-05-22 | Raychem Corporation | Protection of certain electrical systems by use of PTC device |
US4757183A (en) * | 1985-05-22 | 1988-07-12 | Braun Aktiengesellschaft | Portable cordless electric hair dressing appliance utilizing stored heat |
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US5790749A (en) * | 1994-04-27 | 1998-08-04 | U.S. Philips Corporation | Hair dryer with controlled air flow |
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Cited By (27)
Publication number | Priority date | Publication date | Assignee | Title |
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Also Published As
Publication number | Publication date |
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CN1761414A (en) | 2006-04-19 |
EP1592318A2 (en) | 2005-11-09 |
CA2513602A1 (en) | 2004-08-05 |
EP1592318A4 (en) | 2007-12-26 |
WO2004064565A2 (en) | 2004-08-05 |
WO2004064565A3 (en) | 2005-03-03 |
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